Co2 burner in sealed room questions

in a sealed room with no leaks how does the flame on the buner stay lit when it burns out all the ox in the room?

how long does a 33.5 lb propane tank like the ones you see on forklifts last in a sealed room with no leaks?

you are not going to run the co2 all the time are you???? 2 times aday for 15 min is planty.....shit that tank used this way will last boout 2 months....if anything i said here helped you dont for get to +rep

no the burner would be on a monitor.

i drew this up tell me what yall thank.

The plants will provide all the oxygen you need. Just set your controller for 1450 or so depending on make and model and you should be fine. 1500 is where most plants thrive and is safe to humans. If you ever feel dizzy or light headed your controller may be out of calibration and the level of cO2 maybe higher than what it is reading.